21336206276 has 24 divisors (see below), whose sum is σ = 46551723456. Its totient is φ = 8312807520.

The previous prime is 21336206263. The next prime is 21336206299. The reversal of 21336206276 is 67260263312.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34636391 + ... + 34637006.

It is an arithmetic number, because the mean of its divisors is an integer number (1939655144).

Almost surely, 2^21336206276 is an apocalyptic number.

It is an amenable number.

21336206276 is an abundant number, since it is smaller than the sum of its proper divisors (25215517180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21336206276 is a wasteful number, since it uses less digits than its factorization.

21336206276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69273419 (or 69273417 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 38.

Adding to 21336206276 its reverse (67260263312), we get a palindrome (88596469588).

The spelling of 21336206276 in words is "twenty-one billion, three hundred thirty-six million, two hundred six thousand, two hundred seventy-six".